FIELD: control system or control of non-electrical quantities.
SUBSTANCE: system and method of diagnosis for a pressure regulator in a process unit are proposed. Diagnostic device contains a processor functionally associated with a pressure regulator; memory device functionally associated with the processor; and a sensor operatively associated with a pressure regulator inlet valve, a pressure regulator outlet valve, and a processor. Diagnostic module is stored in a memory device and, when executed by its processor, is a diagnostic tool on the user interface.
EFFECT: system and method for diagnosing field device are proposed.
18 cl, 8 dwg
